Chimney cowl or ventilator.



J. MARCUS.

CHIMNEY OOWL OR VENTILATOR.

APPLICATION FILED we. 11, 1909.

Patented Dec. 21, 1909.

a w Zl/VI/E/VTOR 5 Arromv n pn'rn JACOB MARCUS, or NEW YORK, N. Y.

CHIMNEY COXVL OR VENTILATOB.

Application filed August 11, 1909.

To all whom it may concern:

Be it known that I, JACOB MARCUS, a subject of the King of Roumania, andresident of the city of New York, in the county of Kings and State ofNew York, have invented certain new and useful Improvements in ChimneyCowls or Ventilators, of which the following is a specification.

The present invention relates to chimney cowls or ventilators which arepivotally mounted upon the chimney top and adapted to be moved by windpressure.

One of the objects of the invention is to provide an improvedconstruction, whereby the efficiency of the device of the classdescribed is greatly increased, and a strong outward draft created byexternal wind currents passing through the cowl, and carrying with itthe smoke.

Another object of the invention is to pro vide a cowl which is verysimple and cheap in construction, and one which can be easily operatedby the slowest current of air.

With these and other objects in view, the invention consists in thenovel features of construction, combination and arrangement of parts, aswill be hereinafter fully described and pointed out in the appendedclaim.

The invention is illustrated in the accompanying drawings, in which-Figure 1 is a side elevation of the proved chimney cowl or ventilator,Fig. a vertical sectional View of the same, Fig. 3 is a plan viewthereof.

Referring now to the drawings, the numeral 41- indicates an ordinarychimney to conduct the combustible gases from the tire to the outer air;the chimney top-stone 5 being held therein in the usual manner. To thechimney top-stone 5 and registering with the passage 6 is attached anupwardly extending pipe 7, as for instance by screws 8 or theirequivalents. T o the inside of this pipe section 7 is fastened a bracket9, which is, as shown in the drawings, diamond shaped, although it willbe understood that it may be of any other suitable configuration orshape. At two of its corners the bracket is flattened, as indicated at10 and 11, and provided with holes 12 and 13, registering with the holes14 and 15 in the pipe section 7 the holes of the bracket and pipesection being engaged by screws 16 and 17, or rivets, for holding thebracket in position upon the pipe section. There are furim- 2 1S andSpecification of Letters Patent.

Patented Dec. 21, 1909.

Serial No. 512,374.

thermore provided upon said two corners lugs 18 and 19, respectively,engaging the holes 20 and 21, respectively, of the pipe section 7, toprevent the bracket from turning, whereby the same is always held firmlyin a vertical plane. In the lower corner of said bracket arranged abearing 22 for a spindle. 23, which extends upwardly through a sleeve 21- in the upper corner of the bracket, there being provided a cotter pin25 below the sleeve 2% to hold the spindle in place.

The chimney cowl or ventilator consists of a tubular member 26, open atits lower end, and closed at its upper end by a conical cap 27, securedthereto in any suitable manner, or made integral therewith. The tubularmember 26 is of a somewhat larger diameter than the .pipe section 7,allowing thereby the outer air to pass into the tubular section 26. Abracket 29, of a configuration similar to that of the bracket 9 iscarried inside of the tubular section 26, and is secured thereto in thesame manner as the said bracket 9 is attached to the pipe section 7. Abearing 30 is provided at the upper corner of the b 'acket 29, and asleeve 31 at its lower corner, the surface of which sleeve is convex, asindicated at 32, to reduce the friction between the two sleeves.

In the tubular member 26 are provided a plurality of longitudinal slots33, at one edge whereof are arranged radial vanes 34:, extendingoutwardly and being slightly bent at their outer ends 35. These vanesmay be made integral with the tubular member 26, by slitting the saidtubular member along three edges of the slots and bending then thematerial, so slit, outwardly, or the said vanes may be secured to thetubular member in any suitable manner. Slots 36 are provided in theconical cap 27; the vanes 37 adjacent to said slots being bent outwardlyin such a manner that the said slots will be practically covered againstrain or snow.

The operation of the device is as follows: The current of air constantlyrotates the cowl by acting upon the vanes 3 1 thereof, inducing therebya flow of air from the interior of the chimney through the outlets 36 inthe cap thereof. By providing the outlets 3G in the cap, the efficiencyof the cowl or ventilator is greatly increased. The current of airpassing through the slots 33, increases also the efficiency of thedevice. It will be easily seen, that the slightest movement of the airimparts a motion to the cowl, since the vanes 34 thereof are outwardlybent and present thereby a compara tively large surface to the air toact upon.

In order to protect the bearings from soot and ashes, the bearings ofthe spindle 23 may be covered by plates 38 and 89, secured to saidbearings in any suitable manner.

Vhat I claim is:

In a chimney cowl, the combination with a stationary tubular membersecured to the top of the chimney and being provided with two holes, ofa diamond shaped bracket arranged in said tubular member, means forsecuring said bracket to said tubular member, lugs upon those corners ofthe bracket which contact with said tubular member engaging said holeswhereby said bracket is prevented from turning relatively to saidtubular member, a spindle rotatably carried by said bracket, means forpreventing the vertical movement of said spindle, a tubular memberclosed at its upper end by a conical cap and having a plurality oflongitudinal slots in its tubular portion and its k conical cap, adiamond shaped bracket therein and secured to the same in the samemanher as said first bracket is secured to said stationary tubularmember, said second bracket engaging said spindle whereby said secondtubular member is adapted to rotate upon said spindle, and vanesarranged adjacent to said slots and extending radially outward from saidtubular portion and cap, the outer ends of the vanes upon saidtubularportion being slightly bent to present a surface to the wind to actupon.

Signed at New York, in the county of New York and State of New York,this 29th day of July, A. D. 1909.

JACOB MARCUS. lVitnesses SIGMUND Hnnzoe, S. BIRNBAUM.

